package Functii.Elementare;
import Functii.*;

public class Necunoscuta extends Functie{
	public double calcul(){
		return x;
	}
	public String derivare() {
		return "1";
	}
	public double calculDerivata() {
		return 1;
	}
	public String toString() {
		return "x";
	}
	
}
